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post #1 of Old 06-30-2013 Thread Starter
Join Date: May 2013
Location: Montana
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Fuel in oil - where to start?

Hi all-

New to me boat. Gotta love 'em.

Boat has an old Volvo MB10A gas engine. I think four of them were installed in boats. After a recent test run on the hard (with cooling water) I discovered fuel in the oil. It's hard to start when cold (lots of cranking), but once it starts it runs/idles/accelerates well. Starts right up when warm.

Besides a bad ring, which I'm going to check for soon, what else could lead to fuel in the oil?

I've heard that carb problems can do this. PO(S) stated that "the carb needed to be rebuilt"...could it be as easy as that? At $300 for a rebuild and $750 for a new one, I'd like to know if there is anything else I should eliminate before I go down that route.

Fuel pump is also non-standard...the standard mechanical was replaced with a NAPA electric with a dial regulator. Possible problem here?

Any other suggestions on what to check? I'm game for a thorough list.


--Skagit out
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